JEE Main 2026 · MathsNumerical answerNumerical valueMediumMulti-step

JEE Main 4 April 2026, Shift 1, Maths Q23

Question 23 of 75 in this shift, Maths question 23 of 25, Section B.

A=\frac{\sin 3^\circ}{\cos 9^\circ}+\frac{\sin 9^\circ}{\cos 27^\circ}+\frac{\sin 27^\circ}{\cos 81^\circ}

and

B=\tan 81^\circ-\tan 3^\circ

, then

\frac{B}{A}

is equal to ______.

Official answer

NTA final key.

Chapter: Trigonometric Functions
Topic: Trigonometric Identities
Idea tested: Tangent Sum/Difference to Sine Ratio

Same topic in other shifts

All Trigonometric Identities questions

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Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 42 of the 174 JEE Main shifts held from 2017 to 2026.